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Update design_of_bgr.md

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PhillipRambo 2025-05-13 10:09:14 +02:00 committed by GitHub
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modules/module_1_bandgap_reference/part_2_full_bgr/design_of_bgr.md
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@ -375,15 +375,13 @@ In this tutorial, we’ll demonstrate how to perform a Monte Carlo mismatch simu
To begin, include the appropriate model files in your simulation. For mismatch simulations, the models should include mismatch parameters. Use the following imports:
```
.lib $::SG13G2_MODELS/cornerCAP.lib cap_typ .lib $::SG13G2_MODELS/cornerRES.lib res_typ .lib cornerMOSlv.lib mos_tt
.lib $::SG13G2_MODELS/cornerCAP.lib cap_typ .lib $::SG13G2_MODELS/cornerRES.lib res_typ .lib cornerMOSlv.lib mos_tt_mismatch
```
Note (as of 13/05/2025):
Mismatch modeling can currently be enabled simply by using the `mos_tt` model, as `mm_ok` (`mm_ok=1`) is enabled by default. Be aware that this behavior may change in future updates. Also, remember to account for this in the SAR ADC module, particularly during comparator analysis.
- **`cornerCAP.lib`**: Includes typical capacitor models.
- **`cornerRES.lib`**: Includes typical resistor models.
- **`cornerMOSlv.lib`**: Includes MOSFET models with mismatch parameters (`mos_tt`).
- **`cornerMOSlv.lib`**: Includes MOSFET models with mismatch parameters (`mos_tt_mismatch`).
To perform statistical analysis instead of mismatch analysis, use the `mos_tt_stat` model. This captures wafer-to-wafer statistical variations.